<?php
/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

class GroupId {
  public static $types = array('all', 'friends', 'self', 'groupId');
  private $type;
  private $groupId;

  public function __construct($type, $groupId) {
    $this->type = $type;
    $this->groupId = $groupId;
  }

  static public function fromJson($jsonId) {
    if (is_array($jsonId)) {
      if (in_array(substr($jsonId[0], 1), GroupId::$types)) {
        return new GroupId(substr($jsonId[0], 1), null);
      } else {
        return new GroupId('groupId', $jsonId);
      }
    } elseif (in_array(substr($jsonId, 1), GroupId::$types)) {
      return new GroupId(substr($jsonId, 1), null);
    }
    return new GroupId('groupId', $jsonId);
  }

  public function getGroupId() {
    return $this->groupId;
  }

  public function getType() {
    return $this->type;
  }
}